Fan



FIG. 1 is a perspective view of the fan in accordance with embodiment ofthe claimed design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof wherein the broken lines representunclaimed subject matter.

The ornamental design for fan, as shown.